Eswar Sai S

About Eswar Sai S

Hi there! I’m a Senior Python Developer with 9+ years of experience designing and delivering backend systems, APIs, and data-driven solutions across industries including healthcare, finance, and retail. Python has been the foundation of everything I do—from building microservices with Django, Flask, and FastAPI to developing large-scale data pipelines using PySpark, Pandas, and NumPy.Over the years, I’ve built reliable, scalable systems using Python for ETL processing, automation, cloud integration, and data analysis. I’ve worked extensively with complex datasets, optimized SQL queries, and leveraged Python’s rich ecosystem to connect systems, build APIs, automate workflows, and support machine-learning initiatives.I’ve also designed and deployed machine learning models using TensorFlow, PyTorch, and scikit-learn, delivering solutions for predictive analytics, anomaly detection, and intelligent automation. In addition, I’ve integrated NLP and LLM-based services using LangChain and Hugging Face Transformers, building AI-driven applications across healthcare and finance. To ensure scalability and operational efficiency, I’ve implemented MLOps practices with MLflow, AWS SageMaker, and GCP Vertex AI, enabling automated model deployment, monitoring, and retraining.Alongside Python, I bring strong experience across AWS, GCP, and Azure, deploying applications, managing infrastructure, and automating environments using Terraform, Docker, Kubernetes, and Ansible. I’ve built CI/CD pipelines, maintained automated test suites with Pytest and Selenium, and worked closely with DevOps teams to deliver production-grade, resilient systems.In addition to backend development, I’ve contributed to frontend and full-stack solutions using AngularJS, ReactJS, Bootstrap, and Jinja templates when needed. From integrating healthcare platforms (HL7, FHIR, Facets) to building messaging and analytics systems, I consistently focus on clean, modular, Python-powered code that is scalable, maintainable, and impact-driven.Let’s connect! happy to collaborate, exchange ideas, or just talk tech.

Experience

1. Sr Python Developer

   Goldman Sachs

   Jul 2024 — Present · NY, US

   Led backend development using Django, Flask, and FastAPI to deliver scalable APIs and internal tools. Built large-scale data pipelines with Pandas, NumPy, and PySpark for real-time analytics. Automated infrastructure with Terraform and AWS (EC2, S3, Lambda), while mentoring junior devs and driving Agile best practices.

Education

• Anna University, Chennai

  Bachelor's degree